package com.ruoyi.common.utils.file;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.nio.file.Paths;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import cn.hutool.core.io.FileUtil;
import com.baidu.aip.ocr.AipOcr;
import com.ruoyi.common.utils.ImageZipUtil;
import com.ruoyi.project.upload.domain.ExtractImage;
import net.sourceforge.tess4j.ITesseract;
import net.sourceforge.tess4j.Tesseract;
import org.apache.commons.io.FilenameUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import org.springframework.web.multipart.MultipartFile;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.exception.file.FileNameLengthLimitExceededException;
import com.ruoyi.common.exception.file.FileSizeLimitExceededException;
import com.ruoyi.common.exception.file.InvalidExtensionException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.uuid.Seq;
import com.ruoyi.framework.config.RuoYiConfig;

import javax.imageio.ImageIO;

/**
 * 文件上传工具类
 *
 * @author ruoyi
 */
public class FileUploadUtils {
    /**
     * 默认大小 50M
     */
    public static final long DEFAULT_MAX_SIZE = 50 * 1024 * 1024;

    /**
     * 默认的文件名最大长度 100
     */
    public static final int DEFAULT_FILE_NAME_LENGTH = 100;

    /**
     * 默认上传的地址
     */
    private static String defaultBaseDir = RuoYiConfig.getProfile();

    public static void setDefaultBaseDir(String defaultBaseDir) {
        FileUploadUtils.defaultBaseDir = defaultBaseDir;
    }

    public static String getDefaultBaseDir() {
        return defaultBaseDir;
    }


    public static ExtractImage upload_yasuo(String baseDir, MultipartFile file) throws IOException {
        try {
            return upload_yasuo(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        } catch (Exception e) {
            throw new IOException(e.getMessage(), e);
        }
    }
    /**
     * 以默认配置进行文件上传
     *
     * @param file 上传的文件
     * @return 文件名称
     * @throws Exception
     */
    public static final String upload(MultipartFile file) throws IOException {
        try {
            return upload(getDefaultBaseDir(), file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        } catch (Exception e) {
            throw new IOException(e.getMessage(), e);
        }
    }


    public static final ExtractImage upload_yasuo(String baseDir, MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException {
        int fileNameLength = Objects.requireNonNull(file.getOriginalFilename()).length();
        if (fileNameLength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, allowedExtension);

        String fileName = extractFilename(file);

        File desc = getAbsoluteFile(baseDir, fileName);
        //file.transferTo(Paths.get(absPath));

        BufferedImage src = ImageIO.read(file.getInputStream());
        //顺时针旋转90度
        BufferedImage des1 = ImageZipUtil.yaSuoImage(src,510, 1092);

        ImageIO.write(des1, "png", desc);

        String pathFileName = getPathFileName(baseDir, fileName);

        ExtractImage extractImage = readImage(desc);

        extractImage.setPathName(pathFileName);
        return extractImage;
    }

    public static final ExtractImage upload_yasuo2(String baseDir, MultipartFile file,AipOcr client)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException {
        int fileNameLength = Objects.requireNonNull(file.getOriginalFilename()).length();
        if (fileNameLength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);

        String fileName = extractFilename(file);
        String pathFileName = getPathFileName(baseDir, fileName);

        String absPath = getAbsoluteFile(baseDir, fileName).getAbsolutePath();
        file.transferTo(Paths.get(absPath));
        //ExtractImage extractImage = readImage(desc);
        ExtractImage extractImage = readImage2(absPath,client);
        extractImage.setPathName(pathFileName);
        return extractImage;
    }

    /**
     * 读取图片内容
     *
     * @param
     */
    public static ExtractImage readImage(File file) {
        ExtractImage extractImage = new ExtractImage();
        try {
            //创建Tesseract对象
            ITesseract tesseract = new Tesseract();
            //设置字体库路径
            tesseract.setDatapath("src/main/resources/tessdata");
            //中文识别
            //tesseract.setLanguage("chi_sim");
            //执行ocr识别
            String result = tesseract.doOCR(file);
            //使用正则替换：\r回车 \n换行, \s任何空白字符
            result = result.replaceAll("\\r|\\n", "-").replaceAll(" ", "");

            extractImage.setTime(time(result));
            extractImage.setMoney(money(result));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return extractImage;
    }

    public static ExtractImage readImage2(String url,AipOcr client) {

        HashMap<String, String> options = new HashMap<>();
        options.put("language_type", "CHN_ENG");
        options.put("detect_direction", "true");
        options.put("detect_language", "true");
        options.put("probability", "true");

        ExtractImage extractImage = new ExtractImage();
        try {
            String result = "";
            JSONObject res = client.basicGeneral(url, options);
            JSONArray wordsResult = res.getJSONArray("words_result");
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < wordsResult.length(); i++) {
                sb.append(wordsResult.getJSONObject(i).get("words")+"--");
            }
            //使用正则替换：\r回车 \n换行, \s任何空白字符
            result = sb.toString().replaceAll("\\r|\\n", "-").replaceAll(" ", "")
                    .replaceAll("年","-")
                    .replaceAll("月","-")
                    .replaceAll("：",":")
                    .replaceAll("日","");

            extractImage.setTime(time(result));
            extractImage.setMoney(money(result));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return extractImage;
    }

    /**
     * 提取日期
     *
     * @param text
     */
    public static Date time(String text) {
        String pattern = "([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]|[0-9][1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8])))([0-1]?[0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9])";
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(text);
        Date newTime = null;
        while (m.find()) {
            String result = m.group(0);
            StringBuffer sb = new StringBuffer(result);
            sb.insert(10, " ");
            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            try {
                newTime = format.parse(String.valueOf(sb));
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return newTime;
    }

    /**
     * 提取金额
     *
     * @param text
     * @return
     */
    private static BigDecimal money(String text) {
        String pattern = "(\\d+\\.\\d+)";
        Pattern p = Pattern.compile(pattern);
        Matcher m = p.matcher(text);
        while (m.find()) {
            String group = m.group(0);
            BigDecimal money = new BigDecimal(group);
            System.out.println(money);
            return money;
        }
        return null;
    }

    /**
     * 根据文件路径上传
     *
     * @param baseDir 相对应用的基目录
     * @param file    上传的文件
     * @return 文件名称
     * @throws IOException
     */
    public static final String upload(String baseDir, MultipartFile file) throws IOException {
        try {
            return upload(baseDir, file, MimeTypeUtils.DEFAULT_ALLOWED_EXTENSION);
        } catch (Exception e) {
            throw new IOException(e.getMessage(), e);
        }
    }

    /**
     * 文件上传
     *
     * @param baseDir          相对应用的基目录
     * @param file             上传的文件
     * @param allowedExtension 上传文件类型
     * @return 返回上传成功的文件名
     * @throws FileSizeLimitExceededException       如果超出最大大小
     * @throws FileNameLengthLimitExceededException 文件名太长
     * @throws IOException                          比如读写文件出错时
     * @throws InvalidExtensionException            文件校验异常
     */
    public static final String upload(String baseDir, MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, IOException, FileNameLengthLimitExceededException,
            InvalidExtensionException {
        int fileNameLength = Objects.requireNonNull(file.getOriginalFilename()).length();
        if (fileNameLength > FileUploadUtils.DEFAULT_FILE_NAME_LENGTH) {
            throw new FileNameLengthLimitExceededException(FileUploadUtils.DEFAULT_FILE_NAME_LENGTH);
        }

        assertAllowed(file, allowedExtension);

        String fileName = extractFilename(file);

        String absPath = getAbsoluteFile(baseDir, fileName).getAbsolutePath();
        file.transferTo(Paths.get(absPath));
        return getPathFileName(baseDir, fileName);
    }

    /**
     * 编码文件名
     */
    public static final String extractFilename(MultipartFile file) {
        return StringUtils.format("{}/{}_{}.{}", DateUtils.datePath(),
                FilenameUtils.getBaseName(file.getOriginalFilename()), Seq.getId(Seq.uploadSeqType), getExtension(file));
    }

    public static final File getAbsoluteFile(String uploadDir, String fileName) throws IOException {
        File desc = new File(uploadDir + File.separator + fileName);

        if (!desc.exists()) {
            if (!desc.getParentFile().exists()) {
                desc.getParentFile().mkdirs();
            }
        }
        return desc;
    }

    public static final String getPathFileName(String uploadDir, String fileName) throws IOException {
        int dirLastIndex = RuoYiConfig.getProfile().length() + 1;
        String currentDir = StringUtils.substring(uploadDir, dirLastIndex);
        return Constants.RESOURCE_PREFIX + "/" + currentDir + "/" + fileName;
    }

    /**
     * 文件大小校验
     *
     * @param file 上传的文件
     * @return
     * @throws FileSizeLimitExceededException 如果超出最大大小
     * @throws InvalidExtensionException
     */
    public static final void assertAllowed(MultipartFile file, String[] allowedExtension)
            throws FileSizeLimitExceededException, InvalidExtensionException {
        long size = file.getSize();
        if (size > DEFAULT_MAX_SIZE) {
            throw new FileSizeLimitExceededException(DEFAULT_MAX_SIZE / 1024 / 1024);
        }

        String fileName = file.getOriginalFilename();
        String extension = getExtension(file);
        if (allowedExtension != null && !isAllowedExtension(extension, allowedExtension)) {
            if (allowedExtension == MimeTypeUtils.IMAGE_EXTENSION) {
                throw new InvalidExtensionException.InvalidImageExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.FLASH_EXTENSION) {
                throw new InvalidExtensionException.InvalidFlashExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.MEDIA_EXTENSION) {
                throw new InvalidExtensionException.InvalidMediaExtensionException(allowedExtension, extension,
                        fileName);
            } else if (allowedExtension == MimeTypeUtils.VIDEO_EXTENSION) {
                throw new InvalidExtensionException.InvalidVideoExtensionException(allowedExtension, extension,
                        fileName);
            } else {
                throw new InvalidExtensionException(allowedExtension, extension, fileName);
            }
        }
    }

    /**
     * 判断MIME类型是否是允许的MIME类型
     *
     * @param extension
     * @param allowedExtension
     * @return
     */
    public static final boolean isAllowedExtension(String extension, String[] allowedExtension) {
        for (String str : allowedExtension) {
            if (str.equalsIgnoreCase(extension)) {
                return true;
            }
        }
        return false;
    }

    /**
     * 获取文件名的后缀
     *
     * @param file 表单文件
     * @return 后缀名
     */
    public static final String getExtension(MultipartFile file) {
        String extension = FilenameUtils.getExtension(file.getOriginalFilename());
        if (StringUtils.isEmpty(extension)) {
            extension = MimeTypeUtils.getExtension(Objects.requireNonNull(file.getContentType()));
        }
        return extension;
    }


}
